Linux-PCI Archive on lore.kernel.org
 help / color / Atom feed
From: Bjorn Helgaas <helgaas@kernel.org>
To: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: bhelgaas@google.com, Alex Deucher <alexander.deucher@amd.com>,
	"open list:PCI SUBSYSTEM" <linux-pci@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
Date: Wed, 29 Jul 2020 14:58:08 -0500
Message-ID: <20200729195808.GA1962849@bjorn-Precision-5520> (raw)
In-Reply-To: <20200728104554.28927-1-kai.heng.feng@canonical.com>

On Tue, Jul 28, 2020 at 06:45:53PM +0800, Kai-Heng Feng wrote:
> We are seeing AMD Radeon Pro W5700 doesn't work when IOMMU is enabled:
> [    3.375841] iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01a0]
> [    3.375845] iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01c0]
> 
> The error also makes graphics driver fail to probe the device.
> 
> It appears to be the same issue as commit 5e89cd303e3a ("PCI: Mark AMD
> Navi14 GPU rev 0xc5 ATS as broken") addresses, and indeed the same ATS
> quirk can workaround the issue.
> 
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=208725
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>

Applied with Alex's ack to pci/virtualization for v5.9, thanks!

I also added a stable tag since we did that for 5e89cd303e3a.  Let me
know if you *don't* want that.

> ---
>  drivers/pci/quirks.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 812bfc32ecb8..052efeb9f053 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -5192,7 +5192,8 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
>   */
>  static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
>  {
> -	if (pdev->device == 0x7340 && pdev->revision != 0xc5)
> +	if ((pdev->device == 0x7312 && pdev->revision != 0x00) ||
> +	    (pdev->device == 0x7340 && pdev->revision != 0xc5))
>  		return;
>  
>  	pci_info(pdev, "disabling ATS\n");
> @@ -5203,6 +5204,8 @@ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
>  /* AMD Iceland dGPU */
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
> +/* AMD Navi10 dGPU */
> +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
>  /* AMD Navi14 dGPU */
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
>  #endif /* CONFIG_PCI_ATS */
> -- 
> 2.17.1
> 

      parent reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28 10:45 Kai-Heng Feng
2020-07-28 14:37 ` Deucher, Alexander
2020-07-29 19:58 ` Bjorn Helgaas [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200729195808.GA1962849@bjorn-Precision-5520 \
    --to=helgaas@kernel.org \
    --cc=alexander.deucher@amd.com \
    --cc=bhelgaas@google.com \
    --cc=kai.heng.feng@canonical.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-PCI Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-pci/0 linux-pci/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-pci linux-pci/ https://lore.kernel.org/linux-pci \
		linux-pci@vger.kernel.org
	public-inbox-index linux-pci

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-pci


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git